Construction of window-screens.



3. C. SCOTT.

CONSTRUCTION OF WINDOW SCREENS.

APPLICATION FILED OCT. 16. 1916.

1,245,045.. Patented Oct, 30, 1917.

JOHN CL SGOTT, OF LEXINGTON PIKE, KENTON COUNTY, KENTUCKY.

CONSTRUCTiON OF WINDOW-SCREENS.

Specification of Letters Patent.

Patented @ct. so, 1917.

Application filed October 16, 1916. Serial No. 125,804.

To all whom it may concern:

Be it known that 1, JOHN C. SCOTT, residing on the Lexington pike, Kenton county, State of Kentucky, have invented certain new and useful Improvements in the Construction of Window-Screens, of which the following is a clear, full, and exact description, attention being called to the drawing which accompanies this application and forms a part thereof.

This invention concerns screens used to prevent ingress of insects through openings, like windows and doors without interfering with admission of air and ventilation.

Such screens consist substantially of a frame fitted to the'opening which is to be protected, of screen-cloth stretched between the members of this frame and of means to hold the screen-cloth to the frame-members. As to these holding means there are screens in which these means are not readily detachable to permit renewal of the cloth, such renewal, independent of the frame being in fact not contemplated.

My invention concerns screens in which these holding means are readily detachable to permit placing of new screen cloth in the frame and the invention concerns these means and their construction, as well as the construction of the frame, all as hereinafter described and claimed and as illustrated in the accompanying drawing in which:

Figure 1. shows a front-view of a screen with parts between the four corners broken out.

Fig. 2.is an enlarged cross-section of one of the frame-members.

Fig. 3. shows one of the corners of the aforesaid frame before the cloth is attached.

Fig. 4. shows the same corner and illustrates manner of connecting the cloth-hold ing means.

Fig. 5. shows portion of a blank used in the construction of the frame.

Fig. 6. in a perspective view of a framecorner illustrates a modified construction of the cloth-holding means.

Fig. 7. is an enlarged cross-section of this frame.

Fig. 8. in a view similar to Fig. & illustrates manner of attaching these modified screen-holding means.

Fig. 9. in perspective view shows a portion of one of the cloth-holding means.

The construction of the frame contemplates the use of sheet metal and accordingly the four frame-members, indicated by screen and continuous all around the four.

sides thereof. It forms part of the means for holding the screen-cloth in position as will be presently explained.

At the outer edge of the frame and continuous all around the four sides thereof there is another flange 13, also at an angle to the plane of the screen.

Its function is to stifi'en the frame and I render it The four flat frame-members are connected to each other so as to form a continuous flat surface parallel to the plane of the screen .and a preferable method of con struction is to form them in one blank which contains flanges 12 and 13. A portion of such a blank is shown in Fig. 5.

Metal is removed from this blank at 14 where the corners of the frame are to be formed, and flanges 12 and 13 are turned up after which the blank is bent to form the frame as shown in Fig. 1.

The four fiat parts 10 meet in miter joints 15 and the connection of the opposite edges at these jointsis made by hard solder or by electric welding.

To the frame so constructed the screencloth is now applied, the first step being shown in Fig. 3 and consists of placing a piece of cloth so as to rest upon the four flanges 12, 12, 12, 12, and parallel to the flat frame-members it being cut to a size so as to project beyond these flanges to anextent about equal to the height of these flanges.

These projecting edges are now pressed down against the side of these flanges and held against them by the edges of clamping strips 16, supported on the flat members 10 as shown in Figs. 1 and 2.

To so hold these two parts 16 and 10, last mentioned, to each other, projections are provided on one of them to be received by complementary cam slots in the other one.

17 are provided on members 10.

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As illustrated in Figs. 6, '7 and 8, metal is forced up to form projections 18, which are the functional equivalents of buttons 1'3.

The clamping strips have cam slots 19, which are wider at one of their ends so as to permit the buttons, or projections, to pass readily through them when the clamping strips are placed against frame parts 10 as shown in Figs. 4 and 8, (horizontal strip), said strips being narrower than the space between flanges 12 and 13 so that they may be readily placed in the manner indicated.

When so positioned, the inner edges of the clamping strips are opposite the downturned edges of the screen-cloth and when said strips are now moved lengthwise in the 10 and parallel to the plane of the screenand of the screen cloth.

This lateral movement of the clamping strips incidental to their longitudinal movement causes them to also engage the downturned edges of the screen-cloth and clamps them firmly against flanges 12. See also Figs. 1 and 2.

In order to stiffen the clamping strips their edges may be turned over and doubled up as shown at 20 in Fig. 2, or a narrow flange 21 may be formed at one of their edges as shown in Fig. 7' which is adapted to engage the down-turned edge of the screen-cloth.

For screen-cloth holding purposes, flange 12 participates as one of the complementary clamping abutments or shoulders between which the edges of the cloth are held and for the purpose of this function it need not necessarily be" an up-turned flange at the edge of the frame or an integral part thereof.

To facilitate manipulation of the clamping strips for adjustment, handles '22 are provided by constructing and attaching them as shown in Fig. 9 so that they extend over slots 19, they also serve to restore rigidity to these strips and brace them where otherwise they would be weaken account of these perforations. i

- Having described my invention 1 claim as new:

1. In a screen the combination of flat frame-members endwise connected to form a continuous flat screen-frame, longitudinal shoulders on these frame-members, screencloth stretched acrom the frame so as to be parallel with the first members thereof and 5 having its edges turned down over these shoulders, strips fitted flatwise against the flat frame members and means for adjustably naespae holding these strips to the frame-members and in a manner permitting them to be moved endwise thereon and parallel to the screen-cloth and toward or from said shoulders to clamp the edges of the screen-cloth against them or to release them therefrom.

2. ln a screen the combination of framemeinbers endwise connected to form the screen-frame, a flange projecting from these frame-members at an angle to the plane of the screen, screen-cloth extending across this frame and turned down over the edges of the flanges and against their sides, clamp ing strips for the screen-cloth, means whereby they are adjustably held on the framemembers so as to be lengthwise movable on them and in a manner so that this movement causes these strips to be also shifted laterally against the flanges mentioned so as to clamp the down-turned edges of the screen-cloth between them.

3. In a screen the combination of a frame,

the members of which have clamping shoulders projecting therefrom, screencloth stretched across the frame and extending over these shoulders and down on the inner sides thereof, complementary clamping strips for these shoulders and means for holding them adjustably to the frame-members and in a manner permitting them to be edgewise moved with reference to the sides of the shoulders and in a direction parallel to the screen-cloth to clamp on to release the same.

4. In a screen the combination of framemembers having projecting shoulders and clamping strips for these members, projections on one and complementary cam slots in the other whereby they are held together so that the clamping strips have an edgewise adjustment on the frame-members and with reference to the shoulders thereon, and screen'- cloth extending between the frame-members and adapted to be held at its edges between the shoulders and the clam ing'strips.

a. screen the combination of the screen-cloth with a frame to which this-cloth is secured, the members of the frame having shoulders, clamping strips for holding the edges of this screen-cloth against these shoulders, said strips having cam slots, projections on the frame-members adapted to be received by these slots, and handles on these clamping strips for manipulation, said handles being secured to the strips so as to bridge the slots in them thereby strengthenmg these strips and bracing-them at their perforated portions. I

In testimony whereof I hereunto affix my signature.

- JQHN C. SCOTT. 

